Roof pitch designations are comprised of two numbers indicating a ratio.
0 3 roof pitch.
The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7.
Roof pitch defined and explained.
The exact roof slope in degrees is given by the arctangent.
Pitch is the term used to describe the angle slope or slant of your roof.
You can go by the measurements taken by walking the roof.
1 pitch 1 01 2 pitch 1 02 3 pitch 1 03 4 pitch 1 05 5 pitch 1 085 6 pitch 1 12 7 pitch 1 16 8 pitch 1 21 9 pitch 1 25 10 pitch 1 31 11 pitch 1 36 12 pitch 1 42.
Thus pitch is typically greater in areas of high rain or snowfall.
A completely flat roof is a poor design as water and snow will collect on it eventually leading to your roof collapsing in from the weight of it all.
The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.
Since this is a flat roof or nearly flat roof.
The smallest pitch of a roof is 0 5 12.
The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.
Or the colon can replace the slash as in 2 12 or 7 12.
Definitions vary on when a roof is considered pitched.
0 pitch 1 00x the roof area.
Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow.
In degrees 10 2 in 12 or 1 in 6 is considered a minimum.